Revert "- removed a few redundant includes"

This reverts commit 7cd5bd9773.

This wasn't supposed to be pushed on master.

src/sound/mididevices/music_win_mididevice.cpp

@@ -42,6 +42,7 @@
 
 #include "i_musicinterns.h"
 #include "templates.h"
+#include "doomdef.h"
 #include "m_swap.h"
 #include "doomerrors.h"
 

src/sound/music/i_music.h

@@ -34,6 +34,7 @@
 #ifndef __I_MUSIC_H__
 #define __I_MUSIC_H__
 
+#include "doomdef.h"
 #include "i_soundinternal.h"
 
 class FileReader;

src/sound/music/i_musicinterns.h

@@ -5,6 +5,7 @@
 #include "mus2midi.h"
 #include "i_sound.h"
 #include "i_music.h"
+#include "s_sound.h"
 #include "files.h"
 #include "wildmidi/wildmidi_lib.h"
 #include "midisources/midisource.h"

src/sound/timidity/instrum_dls.cpp

@@ -26,6 +26,7 @@
 #include <math.h>
 
 #include "timidity.h"
+#include "doomdef.h"
 
 #define __Sound_SetError(x)
 

src/sound/timidity/instrum_sf2.cpp

@@ -4,6 +4,7 @@
 #include <math.h>
 #include <memory>
 
+#include "doomdef.h"
 #include "m_swap.h"
 #include "templates.h"
 #include "timidity.h"